help me with this math its really geo 30-60-90

Algebra
Tutor: None Selected Time limit: 1 Day

The altitude of an equilateral triangle is 18 inches.  Find the length of a side.

Feb 14th, 2015

since it is equilateral triangle, two right angled triangles are formed, measuring 30, 60 and 90

18/sin 60=x/sin 90

20.78=x/1

x=20.78 inches

length of a side.=20.78 inches


Feb 14th, 2015

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Feb 14th, 2015
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